Niels poulson



PATENT BD FEB ZS, 1904. N. POULSON. Y FIREPROOF STRUCTURE.

APPLIGATION FILED now. 20. 1903.

N0 MODEL.

WITNESSES.-

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UNITED STATES Patented February 23, 1904.

NIELS POULSON, on NEW YORK, N. Y.

FIREPROOF STRUCTURE.

SPECIFICATION forming part of Letters Patent No. 753,209, dated February23, 1904.

Y Original application filed March 1, 1902, Serial No. 96,309. Dividedand this application filed November 20, 1903. Serial No. 181,994. (Nomodel.)

To on whom it. may concern} Be it known that I, NIELs Pounson, a citizenfor fireproof buildings; and its objects are to render the doorways ofsuch buildings as fully fireproof as the customary fireproof partitions,to accomplish this result in the most-simple and inexpensive manner, andat the same time to provide for a neat and workmanlike appearance whichmaybe and preferably is similar to that of cabinet woodwork.

The present invention consists in a fireproof door-frame of novelconstruction and in its combination with a fireproof door, ashereinafter set forth and claimed.

A sheet of drawings accompanies this specification as part thereof.

Figure 1 is a face view of a fireproof door and door-frame, illustratingthis invention; and Fig. 2 represents a cross-section at A B, Fig. 1, ona larger scale.

Like reference-letters refer to like parts in the two figures.

The door-frame a and the door I) or its body are preferably andconveniently in common of the material known as. lignolith, consistingof'a composition of fibrous materialsuch as excelsior, cocoanut fiber,or the like, with oxid of manganese and chlorid of manganese in suitableproportions, the same being mixed with water to the consistency of apaste and permitted to harden in suitable molds.

The door-frame a is constructed of lignolith, including, with thedoor-frame proper or its body and in one piece therewith, thearchitraves 0' and d, Fig. 2, any required internal rabbet or rabbets c,Fig. 2, and a suitable recess f, Fig. 2, which admits and incloses theadjoining edge of the wall or partition 9, Fig. 2, in which the doorwayis formed. Being of lignolith, as aforesaid, the door-frame a and thedoor 6 or its body are adapted to admit and to securely hold wood-screwsh, Fig. 2, fastening thereto any required attachments, as suitablehinges d, Fig. 2.

For the purposes of the leading features of the present invention thedoor 32 may be of any known or improved construction. The specificconstruction represented in Fig. 2 comprises a body of lignolith, asaforesaid, having a metallic frame or edge piece Fig. 2, in the form ofa channel-bar with inwardlydirected flanges between which the lignolithis solidly molded and provided with holes through which the screws hextend into the lignolith body of the door.

The door-frames. and door I; together constitute a fireproof structurethat is not only new in the art, but of demonstrated effectivenose.

A glazed opening in the door 6 is represented at k in Fig. 1, the glasspanel of which 7 may be of the fireproof construction set forth andclaimed in my Patent No. 673,009, dated April 30, 1901.

The lignolith body of the specific doorshown' at Z) may be andpreferably is of the construction set forth and claimed in thespecification of my original application, Serial No. 96,309,"

of which this is a division.

The term lignolith as used in my claims hereto appended is intended toinclude the specific material so named and any equivalent materialadapted to be used in substantially the same manner and with the same orsubstantially the same effects.- 4

Having thus described said improvement, I claim as my invention anddesire to patent under this specification- 1. A fireproof door-frameconstructed of lignolith and including architraves in one piece with thebody of the frame, substantially as hereinbefore specified.

2. A fireproof door-frame constructed of lignolith and includingarchitraves in one piece with the body of the frame, a rabbet within theframe, and a recess which admits and incloses the adjoining edges of thepartition in which the doorvyay is formed, substantially as hereinbeforespecified.

3. A fireproof structure consisting of a doorframe constructed oflignolith having archi- 5 traves in one piece with the body of theframe,

a door having a body of lignolith, hinges connecting the door-frame anddoor, and Woodscrews attaching the hinges to the respective parts andhaving their hold in the lignolith, substantially as hereinbeforespecified.

NIELS POULSON. Witnesses:

JAs. -L. EWIN, E. Tnos. Lor'rus.

